andrews



(No Model.)

E. W. ANDREWS. ADJUSTABLE ROCKER.

' Patented July 12,1881.

4 zzwz, .71

UNITED STATES PATENT OFFICE.

EDWARD W. ANDREWS, OF DETROIT, MICHIGAN, ASSIGNOROF ONE-HALF TO WILLIAMW. PETHERIOK, OF SAME PLACE.

ADJUSTABLE ROCKER.

SPECIFICATION forming part of Letters Patent No. 244,104, dated July 12,1881,

Application filed March 23, 1881. (No model.)

To all whom it may concern:

Be it known that I, EDWARD W. ANDREWS, of Detroit, lVayne county,Michigan, have invented an Improvement in Adjustable Rockers, of whichthe following is a specification.

The nature of this invention relates to certain new and usefulimprovements in the construction of rockers which are removable andcapable of adjustment upon ordinary chairs; and the invention consistsin the peculiar construction and arrangement of devices whereby suchadjustment is obtained, all as more fully hereinafter set forth.

Figure 1 is a perspective view of a chair provided with my improvedadjustable rocker. Figs. 2 and 3 are details of construction of theclamp for securing the rocker to the chair.

In the accompanying drawings, which form a part of this specification, AA represent rockers which are designed to be removably secured to thelegs B of a chair. At or near the front end of each rocker I rigidlysecure a proper casting, O, which is provided with the upwardly-projectin g stud D, preferably of the form shown. E is a sleeve, which fitsupon the stud D, and is designed to be sufficiently large to receive theleg of any ordinary chair. F is a thumb-screw,which is threaded throughone side of the sleeve E, theinnerend of which is intended to impingeagainst the back face of the stud D.

By this construction it will readily be seen that by the operation ofthe screw the sleeve and stud may be drawn toward each other andthoroughly clamp the leg of the chair which is between them, it beingevident that the device will receive and clamp legs of various sizes.

The device for securing the rear legs is the same as that alreadydescribed, with the exception that the plate 0 is made adjustablelongitudinally upon the rocker. The accompanyin g drawings representthat such plate is susceptible of a longitudinal adjustment upon therocker by slidingbetween the ways or guides a, which are rigidly securedupon the rocker. Thus it will be seen that chairs the legs of which areof different distances apart in their spread can readily be secured uponthe rockers, and that any ordinary standing chair can be converted intoa rocker, it being designed to give sufficient adjustment to the rearclamps to meet the various forms and sizes of chairlegs.

If desired, at the points where the clamps comein contact with'the legsthere may beinterposed between them a rubber or other elastic cushion,which would prevent the marring of the leg, although ordinarily thiswould not be necessary.

What I claim as my invention is- 1. In combination with the rockerA andthe plate 0, having a semi-cylindrical stud, D, the sleeve E and screwF, substantially as and for the purpose specified.

2. In combination with the sleeve E, screw F, and plate 0, having astud, D, the guide plates at a, fastened to the rocker A, substantiallyas and for the purpose specified.

EDWARD W. ANDREWS.

Witnesses H. S. SPRAGUE, A. BARTHEL.

